> ## Documentation Index
> Fetch the complete documentation index at: https://docs.celesto.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Browser agents

> Use Celesto and SmolVM browser sandboxes for AI agents that browse sites, test web apps, inspect pages, and run computer-use workflows.

Some agents need to see and use the web. They open pages, inspect UI, run browser automation, test flows, and collect evidence from real sites.

Celesto supports browser-oriented agent workflows through sandboxed computers and SmolVM browser sessions. The browser runs away from your infrastructure, while the agent can still inspect pages, use tools, and save outputs.

## Good browser-agent tasks

* QA a web app flow.
* Inspect a site before summarizing it.
* Test login, checkout, onboarding, or dashboard flows.
* Combine browser automation with shell commands.
* Use computer-use style workflows that need a visible browser session.

## Building blocks

<CardGroup cols={2}>
  <Card icon="globe" title="Browser sandboxes" href="/smolvm/features/browser-sandboxes">
    Start browser or desktop sessions that agents can control.
  </Card>

  <Card icon="robot" title="OpenAI Agents sandbox" href="/celesto-sdk/openai-agents">
    Give an OpenAI `SandboxAgent` a hosted Celesto computer or local SmolVM.
  </Card>

  <Card icon="terminal" title="Command execution" href="/celesto-sdk/computers#run-commands">
    Pair browser work with scripts, file inspection, and local tooling.
  </Card>

  <Card icon="folder-open" title="Saved artifacts" href="/getting-started/durable-workspaces">
    Keep screenshots, logs, reports, and generated files in the sandbox workspace.
  </Card>
</CardGroup>

## When to choose browser sandboxes

Use browser sandboxes when page state matters. If the task can be answered from a plain API response, use a normal tool call. If the task requires seeing the page, clicking through a flow, or running browser automation, use a sandboxed browser.

Start with [SmolVM browser sandboxes](/smolvm/features/browser-sandboxes) for local browser runs, or [OpenAI Agents SDK sandboxes](/celesto-sdk/openai-agents) for hosted Celesto integration.